@BlastingNaba The "Even a fish gets it" (Sakana demo wakaru) line parodies the usual "Even a monkey gets it/can understand" (Saru demo wakaru) phrase on some Japanese books. It's essentially the equivalent of the English-language "...for Dummies" description. I think it can stand as-is.
I guess we've identified the troubles, at least...What are you even talking about?!Palmistry and Fortune-telling.Whacha readin'?Even fish get it!No kiddin'~It's a book on palm-reading and fortune-telling. One of my friends got really into it recently.I really don't get the whole fortunes thing.Would you like to give it a try, Senpai?What is this... now I'm curious...